No Operation (NOP)
This information applies to the
CompactLogix
5370, ControlLogix
5570, Compact GuardLogix
5370, GuardLogix
5570, Compact GuardLogix
5380, CompactLogix
5380, CompactLogix
5480, ControlLogix
5580, and GuardLogix
5580 controllers.The NOP instruction functions as a placeholder.
Available Languages
Ladder Diagram
Function Block
This instruction is not available in function block.
Structured Text
This instruction is not available in structured text.
Operands
Ladder Diagram
None
Description
You can place the NOP instruction anywhere on a rung. When enabled the NOP instruction performs no operation. When disabled, the NOP instruction performs no operation.
Affects Math Status Flags
No
Major/Minor Faults
None specific to this instruction. See Common Attributes for operand-related faults.
Execution
Ladder Diagram
Condition/State | Action Taken |
Prescan | N/A |
Rung-condition-in is false | N/A |
Rung-condition-in is true | N/A |
Postscan | N/A |
Examples
Ladder Diagram
Provide Feedback